Investigating left bundle branch area pacing for heart failure patients

Left Bundle Branch Area Pacing in Heart Failure Patients With Ejection Fraction Below Normal

Observational Seoul National University Hospital · NCT06148571

This study is testing a new pacing technique for heart failure patients with weak heart function to see if it can help them feel better when other treatments haven’t worked.

Quick facts

Study typeObservational
Enrollment200 (estimated)
Ages19 Years and up
SexAll
SponsorSeoul National University Hospital Academic / other
Locations1 site (Seoul, Jongno-gu)
Trial IDNCT06148571 on ClinicalTrials.gov

What this trial studies

This observational study aims to evaluate the efficacy and safety of left bundle branch area pacing in patients with heart failure who have a left ventricular ejection fraction of 50% or less. It addresses the limitations of traditional cardiac resynchronization therapy, particularly in patients with unfavorable coronary anatomy. By creating a registry, the study seeks to gather concrete evidence on the potential benefits of this pacing technique as a rescue therapy for patients who have not responded to standard treatments.

Who should consider this trial

Good fit: Ideal candidates include adults diagnosed with heart failure and a left ventricular ejection fraction of 50% or less who require cardiac pacing.

Not a fit: Patients who are under 19 years old, pregnant, or have a life expectancy of less than one year may not benefit from this study.

Why it matters

Potential benefit: If successful, this study could provide a new therapeutic option for heart failure patients who are not candidates for conventional pacing methods.

How similar studies have performed: While the efficacy of left bundle branch area pacing is largely hypothetical, there is a growing interest in its potential, though concrete evidence from similar studies is limited.

Eligibility criteria

Show full inclusion / exclusion criteria
Inclusion Criteria:

* Patients previously diagnosed with heart failure with mid-range(or mildly reduced) ejection fraction and heart failure with reduced ejection fraction, which was documented by an appropriate echocardiographic study (Left ventricle ejection fraction \<50%), and
* Patients with indications of cardiac pacing or cardiac resynchronization therapy

Exclusion Criteria:

* Patients aged less than 19 years.
* Pregnant.
* Patients with an expected life expectancy of less than 1 year.
* Patients with a mechanical valve for the tricuspid valve.
* Patients who need atrial pacing only.
* Patients who are not capable of receiving a transvenous pacemaker for any reason.

Where this trial is running

Seoul, Jongno-gu

Study contacts

How to participate

  1. Review the eligibility criteria above with your treating physician.
  2. Visit the official trial page on ClinicalTrials.gov for the most current contact information and recruitment status.
  3. Contact the listed study coordinator or principal investigator to request pre-screening. Pre-screening is free and never obligates you to enroll.
Conditions Left Ventricular Ejection Fraction Less Then or Equal to 50percent
Last reviewed 2026-06-13 by the Find a Trial editorial team. Information on this page is for educational purposes and is not medical advice. Always consult qualified healthcare professionals about clinical trial participation.